/*
 * Terrier - Terabyte Retriever 
 * Webpage: http://terrier.org/
 * Contact: terrier{a.}dcs.gla.ac.uk
 * University of Glasgow - School of Computing Science
 * http://www.gla.ac.uk/
 * 
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.1 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 * the License for the specific language governing rights and limitations
 * under the License.
 *
 * The Original Code is terrier_floatlex.g
 *
 * The Original Code is Copyright (C) 2004-2011 the University of Glasgow.
 * All Rights Reserved.
 *
 * Contributor(s):
 *   Craig Macdonald <craigm{a.}dcs.gla.ac.uk> (original contributor)
 */
header {
package org.terrier.querying.parser;
}


class TerrierFloatLexer extends Lexer;
options {
	exportVocab=Numbers;
}

tokens{
	NUM_FLOAT;
}

protected
PERIOD:	'.'	;

protected
DIT:	'0'..'9';

protected
INT:	(DIT)+	;

//a query term
NUM_INT: 	INT ('.' INT { _ttype = NUM_FLOAT; } )?;

